commit
Merge branch 'master' of https://github.com/Kemiren/HerbertAdventure.git
Added a ButtonListener Interface and a uniqueID generation for Buttons.
changed uniqueID generation - now the IDs consist of uppercase letters.
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Merge branch 'master' of https://github.com/Kemiren/HerbertAdventure.git

Conflicts:
	SMIMS 2013 Adventure/src/de/herbert/view/View.java